What headphones are good for workout MP3 players?

[cardsunsfan]

My sister has an MP3 player I bought her for working out for Christmas but she doesn't like the headphones that came with and her Birthday is coming up(have to buy something for her today) Do you guys know of any that are really good?

 

[SweetD]

These are great.

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http://www2.shopping.com/xPO-Target_Shure_Sound_Isolating_Earphones_E2C

 

[cardsunsfan]

thanks for the help